Home / 129,724.48-179,020.02-73,135.72

Finding the Fourth Proportional to 129,724.48, 179,020.02 and 73,135.72

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Solution

The fourth proportional to 129,724.48, 179,020.02 and 73,135.72 is: 100,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,724.48 : 179,020.02 = 73,135.72 : x
  2. Step 2: Convert to fraction form
    129,724.48/179,020.02 = 73,135.72/x
  3. Step 3: Cross multiply
    129,724.48x = 179,020.02 × 73,135.72
  4. Step 4: Simplify right side
    129,724.48x = 13,092,758,057.11
  5. Step 5: Solve for x
    x = 13,092,758,057.11/129,724.48
  6. Step 6: Final answer
    x = 100,927.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.